Star Wars: Episode III: Revenge of the Sith(2005) [Shaak Ti]: Stabbed in the back with a lightsaber by General Grievous while Hayden Christensen and Ewan McGregor look on helplessly. (This scene was cut from the actual film, but is included in the DVD's deleted scenes. In the film itself, Orli appears as a hologram during a Jedi council meeting after Grievous' death, so the deleted scene is not considered canon. An alternate scene was filmed in which she is killed by Hayden during his assault on the Jedi temple; this scene was also cut, but is not on the DVD.) (Thanks to Davo)